Lithium-ion polymer cells for military applications

Abstract

Defence R&D Canada (DRDC) is investigating lithium-ion polymer cells for possible future use in army communications and soldier systems, because of their high specific energy. Military operation requires good performance at −20 • C but the standard commercial lithium-ion polymer cells yield only approximately 30% of their room temperature capacity at this temperature. The standard electrolyte is known to be poorly conducting at −20 • C, so DRDC has been working with a Canadian company to produce a cell containing an electrolyte that gives good low temperature performance. Prototype cells have been built and cycled under various conditions. The performance of these cells and the standard cells is discussed.

Synthesis of electrochromic vanadium oxide by pulsed spray pyrolysis technique and its properties

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Machine Learning Aided Design of Polymer with Targeted Band Gap Based on DFT Computation

“…Polymer has been widely permeated into the branches of material science due to the unique properties from all aspects. , A surge in the application of polymer materials has been witnessed in the past decades, ranging from daily products to biomedical materials − to military applications to aircraft fields, etc. In recent years, considerable attention has been attracted to the polymer electrical properties − because of the great potential in electroluminescence materials, polymer solar cells, and organic thin film transistors .…”

Synthesis and characterization of nanocrystalline LiNi0.5Co0.5VO4 powders by citric acid assisted sol–gel combustion process

“…Rechargeable lithium batteries are found to be direct use in aerospace, defense, commercial, civilian, etc., because of their high-voltage and high-energy density [1][2][3]. In order to increase the electrochemical performance, such as, discharge capacity, cyclic ability, etc., wide range of lithium insertion electrode materials were developed and investigated [4][5][6].…”